Mack, 44, is Cal's top candidate, according to one source. Another source, within the Cal athletic department, said as of Thursday afternoon Mack had neither been offered the job nor interviewed

Mack has guided the Musketeers to a record of 111-57 and four NCAA tournament bids in five seasons, including Sweet 16 bids in 2010 and '12.

Mack, who replaced current Arizona coach Sean Miller at Xavier, did not return messages left for him Thursday. The Cincinnati Enquirer said sources at Xavier believe there has been contact between the two parties but weren't convinced Mack had interest.

The only confirmed candidates to replace Mike Montgomery, who retired on March 31, are Cal associate head coach Travis DeCuire and UC Irvine coach Russell Turner.

Mack is signed to a contract at Xavier through the 2017-18 season that is worth $860,000 per season, according to USA Today.